xnu-2422.90.20.tar.gz

[apple/xnu.git] / bsd / dev / dtrace / dtrace_glue.c

diff --git a/bsd/dev/dtrace/dtrace_glue.c b/bsd/dev/dtrace/dtrace_glue.c
index 6d4586e2c4c07b8225415b6cd3512488fe98306b..3e34344a748f23dada54cd35e0402e766810aac7 100644 (file)
--- a/bsd/dev/dtrace/dtrace_glue.c
+++ b/bsd/dev/dtrace/dtrace_glue.c
@@ -51,6 +51,8 @@
 #include <sys/dtrace.h>
 #include <sys/dtrace_impl.h>
 #include <libkern/OSAtomic.h>
+#include <kern/kern_types.h>
+#include <kern/timer_call.h>
 #include <kern/thread_call.h>
 #include <kern/task.h>
 #include <kern/sched_prim.h>
@@ -64,6 +66,7 @@
 #include <vm/pmap.h>
 #include <vm/vm_map.h> /* All the bits we care about are guarded by MACH_KERNEL_PRIVATE :-( */
 
+
 /*
  * pid/proc
  */
@@ -227,7 +230,7 @@ done:
 lck_mtx_t cpu_lock;
 lck_mtx_t mod_lock;
 
-cpu_t *cpu_list;
+dtrace_cpu_t *cpu_list;
 cpu_core_t *cpu_core; /* XXX TLB lockdown? */
 
 /*
@@ -267,62 +270,22 @@ PRIV_POLICY_ONLY(void *cr, int priv, int boolean)
        return kauth_cred_issuser(cr); /* XXX TODO: HAS_PRIVILEGE(cr, priv); */
 }
 
+/* XXX Get around const poisoning using structure assigns */
 gid_t
-crgetgid(const cred_t *cr) { return cr->cr_groups[0]; }
+crgetgid(const cred_t *cr) { cred_t copy_cr = *cr; return kauth_cred_getgid(&copy_cr); }
 
 uid_t
-crgetuid(const cred_t *cr) { return cr->cr_uid; }
+crgetuid(const cred_t *cr) { cred_t copy_cr = *cr; return kauth_cred_getuid(&copy_cr); }
 
 /*
  * "cyclic"
  */
 
-/* osfmk/kern/timer_call.h */
-typedef void            *call_entry_param_t;
-typedef void            (*call_entry_func_t)(
-                                                               call_entry_param_t      param0,
-                                                               call_entry_param_t      param1);
-
-typedef struct call_entry {
-       queue_chain_t       q_link;
-       call_entry_func_t   func;
-       call_entry_param_t  param0;
-       call_entry_param_t  param1;
-       uint64_t            deadline;
-       enum {
-               IDLE,
-               PENDING,
-               DELAYED }         state;
-} call_entry_data_t;
-
-
-typedef struct call_entry   *timer_call_t;
-typedef void                *timer_call_param_t;
-typedef void                (*timer_call_func_t)(
-       timer_call_param_t      param0,
-       timer_call_param_t      param1);
-
-extern void
-timer_call_setup(
-       timer_call_t            call,
-       timer_call_func_t       func,
-       timer_call_param_t      param0);
-
-extern boolean_t
-timer_call_enter1(
-       timer_call_t            call,
-       timer_call_param_t      param1,
-       uint64_t                deadline);
-
-extern boolean_t
-timer_call_cancel(
-       timer_call_t            call);
-
 typedef struct wrap_timer_call {
        cyc_handler_t hdlr;
        cyc_time_t when;
        uint64_t deadline;
-       struct call_entry call;
+       struct timer_call call;
 } wrap_timer_call_t;
 
 #define WAKEUP_REAPER 0x7FFFFFFFFFFFFFFFLL
@@ -337,7 +300,7 @@ _timer_call_apply_cyclic( void *ignore, void *vTChdl )
        (*(wrapTC->hdlr.cyh_func))( wrapTC->hdlr.cyh_arg );
 
        clock_deadline_for_periodic_event( wrapTC->when.cyt_interval, mach_absolute_time(), &(wrapTC->deadline) );
-       timer_call_enter1( &(wrapTC->call), (void *)wrapTC, wrapTC->deadline );
+       timer_call_enter1( &(wrapTC->call), (void *)wrapTC, wrapTC->deadline, TIMER_CALL_SYS_CRITICAL | TIMER_CALL_LOCAL );
 
        /* Did timer_call_remove_cyclic request a wakeup call when this timer call was re-armed? */
        if (wrapTC->when.cyt_interval == WAKEUP_REAPER)
@@ -359,7 +322,7 @@ timer_call_add_cyclic(wrap_timer_call_t *wrapTC, cyc_handler_t *handler, cyc_tim
        wrapTC->deadline = now;
 
        clock_deadline_for_periodic_event( wrapTC->when.cyt_interval, now, &(wrapTC->deadline) );
-       timer_call_enter1( &(wrapTC->call), (void *)wrapTC, wrapTC->deadline );
+       timer_call_enter1( &(wrapTC->call), (void *)wrapTC, wrapTC->deadline, TIMER_CALL_SYS_CRITICAL | TIMER_CALL_LOCAL );
 
        return (cyclic_id_t)wrapTC;
 }
@@ -576,7 +539,7 @@ dtrace_timeout(void (*func)(void *, void *), void* arg, uint64_t nanos)
         * and clock drift on later invocations is not a worry.
         */
        uint64_t deadline = mach_absolute_time() + nanos;
-
+       /* DRK: consider using a lower priority callout here */
        thread_call_enter_delayed(call, deadline);
 
        return call;
@@ -1186,9 +1149,7 @@ dtrace_copycheck(user_addr_t uaddr, uintptr_t kaddr, size_t size)
 
        ASSERT(kaddr + size >= kaddr);
 
-       if (ml_at_interrupt_context() ||        /* Avoid possible copyio page fault on int stack, which panics! */ 
-               0 != recover ||                                 /* Avoid reentrancy into copyio facility. */
-               uaddr + size < uaddr ||                 /* Avoid address wrap. */
+       if (    uaddr + size < uaddr ||         /* Avoid address wrap. */
                KERN_FAILURE == dtrace_copyio_preflight(uaddr)) /* Machine specific setup/constraints. */
        {
                DTRACE_CPUFLAG_SET(CPU_DTRACE_BADADDR);
@@ -1477,13 +1438,6 @@ dtrace_tally_fault(user_addr_t uaddr)
        return( DTRACE_CPUFLAG_ISSET(CPU_DTRACE_NOFAULT) ? TRUE : FALSE );
 }
 
-void
-dtrace_vpanic(const char *format, va_list alist)
-{
-       vuprintf( format, alist );
-       panic("dtrace_vpanic");
-}
-
 #define TOTTY   0x02
 extern int prf(const char *, va_list, int, struct tty *); /* bsd/kern/subr_prf.h */